Snow-plow



(No Model.)

I.l C. PINGREE.

SNOW PLOW.

No. 355,471. n Patented Jan. 4.1887.

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UNITED STATES PATENT OFFICE.'

ISAAC C. PINGREE, OF LAWRENCE, MASSACHUSETTS.

SNOW-PLOW.

SPECIFICATION forming part of Letters Patent No. `355,471, dated January 4, 1887.

Application tiled October 27, 1886. Serial No. 217,332.

To all whom t 11mg/ concern: 4

Be it known that I, IsAAo C. PINGREE, a citizen of the United States, residing at Lawrence, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Snow-Plows; and I do hereby declare that the following is a full, clear,

and exact' description of the same, reference being had to the annexed drawings, making a part of this speciication, and to the letters and figures of reference marked thereon.

Figure l of the drawings is a front elevation of the cowcatcher of a locomotive with my improved snow-plow attachment connected there to, and Fig. 2 a top plan View thereof'.

The present invention has relation to certain new and useful improvements in snowplow attachments to be applied to the cowcatcher of a locomotive.

In this class of snow-plows, unlessthere is quite a depth ofsnow upon the track, a large snow-plow attached to the front ofthe engine is seldom used, for the reason that it is difficult to employit in train service, and generally the locomotive,with its cow-catcher,forms its own plow, and consequently it takes butl a short time,when the engine is in motion,to fill the opening in the cow-catcher hard andsolid. A further objection is that the snowis packed in a narrow path so hard on either side thatif the engine is stopped it is almost impossible to back it, from the fact that the lower side corners of the cow-catcher hook onto the sides of the snow track or path and stall the machine.

It is the object of the 'invention to provide a snow-plow attachment to the cow-catcher that will operate effectually either when the engine is going forward or back`ward,the wingsv constituting the plow being automatic in their adjustment, as 'will be hereinafter described and claimed.

In the accompanying drawings, represents the cow-catcher of an engine of any of theusual forms, and to the sides of which are suitably hinged wings B by means of rods a and veyes of two witnesses.

(No model.)

tions, are employed to prevent the Wings B from extending too far forward, as shown in Fig. 2, when the engine is backing. When Suitable chains, cl,wor other tlexible connecl the engine is going forward,the wings B swing back against the sides of the cow-catcher and are held in position by aspring latch or latches, C, which form Scrapers of the proper Width; and when the engine backs, the moment there is the least catch or resistance the wings open the extent to which the flexible connections will allow them, thereby forming a like scraper inbacking, and not only keeping the path open to the same width, but slipping over or by any obstacle; and when the engine again starts for` ward, the wings at once swing back into the first position, as indicated in Fig. 1.

Having now fully described my invention, what I claimas new, and desire to secure by Letters Patent, is-

1. The combination, with the cow-catcher of a locomotive, of a snow-plow'consisting of automatically-swinging wings detachably connected to the sides thereof, substantially `as and for the purpose set forth.

2. In a snow-plow for the cow-catcherof a locomotive, suitable wingsdetachably hinged to the sides of the cow-catcher and operating automatically, as set forth, in combination with flexible connections to limit the swing of the wings, and spring-latches to hold them in a closed position, substantially as and for the purpose specied.

sot.

hereunto subscribed my name in the presence 'IsAAo o. PINGREE.

` Vitnesses:

WALTER S. DONALD, ZACHARY T. MERRILL. 

